Rule for Russian character sets - SpamAssassin

This is a discussion on Rule for Russian character sets - SpamAssassin ; We're suddenly getting a ton of spam with koi8-r encoding...I tried to do
a custom rule for it like this:
header SUBJ_RUSS_CHAR Subject =~/koi8-r/i
describe SUBJ_RUSS_CHAR has Russian char encoding
score SUBJ_RUSS_CHAR 3.5
The short headers for these spams look ...